Topic summary
Semi-automatic pistols
Extracted from the Wikipedia article Semi-automatic pistol.
Operation
Semi-automatic pistols use one firing chamber that remains fixed in a constant linear position relative to the gun barrel. In contrast, although double-actionrevolvers can also be fired rapidly by simply pulling the trigger, their rounds are not fired from a single chamber, but rather are fired from each of the chambers that are rotated into linear alignment with the barrel's position in turn just prior for each shot fired.